Steel SWRH42A for nail making and production process thereof

The invention provides steel SWRH42A for nail making and a production process thereof. The steel comprises the following chemical components in percentage by weight: 0.40%-0.45% of C, 0.18%-0.28% of Si, 0.35%-0.45% of Mn, less than or equal to 0.018% of P, less than or equal to 0.015% of S, less tha...

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Bibliographische Detailangaben
Hauptverfasser: ZHU JIANG, MOU LIJUN, WU DONGMING, JIANG HONGGANG, LIU ZHENHAI, ZHENG WEI, JIANG YANJU
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention provides steel SWRH42A for nail making and a production process thereof. The steel comprises the following chemical components in percentage by weight: 0.40%-0.45% of C, 0.18%-0.28% of Si, 0.35%-0.45% of Mn, less than or equal to 0.018% of P, less than or equal to 0.015% of S, less than or equal to 0.20% of Cr, less than or equal to 0.20% of Ni, less than or equal to 0.20% of Cu and the balance of iron and inevitable impurities. According to the method, the SWRH42A wire rod for nail making is manufactured by adopting the production process of 120t converter + LF refining + small square billet continuous casting + heating furnace heating + controlled rolling and controlled cooling rolling, so that the mechanical property and the drawing property of the SWRH42A wire rod are ensured, and the cold heading qualification of the SWRH42A wire rod is also ensured. 本发明提供了一种制钉用钢SWRH42A及其生产工艺,钢中化学成分按重量百分比计为:C 0.40%~0.45%、Si 0.18%~0.28%、Mn 0.35%~0.45%、P≤0.018%、S≤0.015%、Cr≤0.20%、Ni≤0.20%、Cu≤0.20%,其余为铁和不可避免的杂质